Porthole ventilator



April 13, 1937. K. KORNBAU Er AL 2,077,175

PORTHOLE VENT ILATOR Filed April 17, 1936 2 Sheets-Sheet 1 .25 1'8 i a g 1 35 35 INVENTOR f lama/Vi K07925411 McWZWgmmmG SQ 4AZAL Patented Apr. 13, 1937 UNITED STA 2,077,175 PORTHOLE VENTILATOR Application April '17, 1936, Serial No. 74,866 6' Claims. (01. sis- This invention relates to ventilation equipment for vessels, and more particularly to a shuttertype device fitting into a port-hole, and by means of which the control of ventilation therethrough is efiected.

An object of the invention is to provide a sturdy ventilating device, easily fitted into the conventional vessel port-hole; one which is constructed of relatively few easily-operating parts, and one which may be conveniently operated from inside of the vessel by manipulation of a hand crank.

A further object of the invention is to provide, in combination with the improved ventilating device, means whereby the port-hole opening may be screened, with the screens so arranged as not to interfere with the ventilating device and its operating mechanism.

In the accompanying drawings, wherein an embodiment of the invention is shown, Fig. 1 is a front view of the ventilating device with the blades thereof in open position; Fig. 2 is a view of the opposite side of the device, as seen from the interior of the vessel, and with the screens in position; Fig. 3 is a sectional view on the line 3-3 of Fig. 1, looking in the direction of the arrows; Fig. 4 is a similar sectional view, showing the blades in closed position; Fig. 5 is a sectional View through the annular seat and mounting for the blades; Fig. 6 is a sectional view on the line 6-6 of Fig. 2, looking in the direction of the arrows; and Fig. 7 is a front View of the channel-shaped guide or housing in which the actuating bar travels, the View being taken on the line 1-1 of Fig. 3, looking in the direction of the arrows.

In the drawings l indicates a part of the hull of a vessel, the same being provided with the conventional port-hole opening 2 in which the port-.- hole frame 3 is mounted. A port-hole cover, consisting of the pane 6 surrounded by the frame 4, is hinged at 5 and when closed is held in such position by the clamping means 6a. The elements just described are of well known construction and form no part of the present invention.

Arranged for securement within the port-hole frame 3 is an annulus or mounting ring 1 snugly fitting the frame 3 and secured in position therein by screws or other suitable means. Mounting ring constitutes the body portion or supporting means for the improved ventilator. Extending transversely of the annulus I is a channel-shaped housing 8 having its outer open end 9 facing the outside of the port-hole, and its inner closed end It facing the interior of the vessel. Said housing contains and acts as a guide for an actuating member I I in the form of a relatively fiat bar, said bar being provided with a plurality of spaced lugs i 2 each of which has itsouter end pivotally connected at 93 to a pair of links it having their opposite ends pivoted at IE to a lug It projecting from the back of a shutter blade l'l. Through this toggle connection between the blades and the actuating member, the blades are moved to open and closed positions by movements of the actuating member back and forth within the housing 8. Each of the six shutter blades shown is provided at its opposite ends and adjacent to one of its longitudinal edges, with bosses 35 (Fig. 1) which are pivoted by suitable pivot pins in bearings l8 formed in a seating ring l9 concentrically secured within the mounting ring I.

The actuating member H is formed with a centrally located hub 20 which is movable within the enlarged central part 2| of housing 8. Said hub 20 is formed with an internally threaded aperture through which the threaded operating shaft 22 extends, said shaft being rotatably mounted in the rear wall ll! of the housing 8 and having a bushing 23 secured on it at the outer side of said wall, and the operating crank 24 attached to it, by the pin 25, on the inner side of said wall.

Briefly, the operation of the device is as follows: When the device is in its closed position, as shown in Fig. 4, it will be seen that the shutter blades I1, with the exception of the adjacent edges of the two central blades, lie with their longitudinal edges in slightly overlapped relationship, thus completely closing the port hole. In such closed position, the end portions of the blades seat against the stepped edge 21 (Fig. 5) of the seating ring l9. To open the ventilator requires merely counter-clockwise rotation of the crank 24, the rotation of'the threaded shaft 22 thereby in hub 20, causing the actuating member II to be moved outwardly in the direction of the open side 9 of housing 8. As actuating member H is so moved, it swings the blades I! on their respective pivots, through the action of the toggle connections between the member and the blades, causing the blades to be pivoted to open position, clearly shown in Figs. 1 and 3. During such opening movement, three of the blades, namely, those at the right of shaft 22 in Figs. 3 and 4, swing to the left, while the remaining three blades to the left of shaft 22, swing to the right. Thus, all blades, on such opening movement, swing toward the vertical center line of the device. To close the blades, it is merely necessary to rotate the crank 24 in clockwise direction thereby drawing the actuating member backwards in the housing 8 and causing the blades to swing inwardly,

through their toggle connection with the actuating member, to closed position against the seat 21 as shown in Fig. 4. Since the movement of the actuating member II is caused by the screwthreaded engagement between the hub 20 of actuating member II and the operating shaft 22, it is obvious that the blades can be moved to any desired, fully or partly open or closed position to regulate the desired amount of ventilation and the device will remain in any set position of manual adjustment until changed by rotation of the crank.

As herein disclosed, the device is arranged with the blades disposed vertically, this being found desirable to permit the blades to deflect the air into the stateroom when desired. It will be understood however, that the device can be located in the port-hole in a position at right angles to that shown whereby the blades will be arranged with their planes disposed horizontally, or in fact in any position where the blades are angularly disposed, if desired. Any small amount of Water entering between the blades may drain out of the Weep holes 31 provided in ring 19.

In Figs, 2 and 6 the ventilating device is shown provided with screens 28 and 29, each of said screens consisting of a semi-circular section of screening enclosed by a frame 30. When in position, each screen abuts against the face 3| on seating ring l9 and is held in position by means of the positioning pins 32 engaging apertures in ring I and the spring fingers 33 projecting laterally from the screen frames 39 and having their ends entering the apertures 34 formed in the walls of the housing 8. The two screen sections are thus easily snapped into position on opposite sides of the housing 8 where they completely cover the port hole yet they do not in any manner interfere with the opening and closing of the ventilating device.

With the structure shown, a simple, effective, ventilating device is provided which can be easily installed without requiring alterations to the port-hole; which permits the port-hole to be closed by its cover when desired, and this regardless of whether the ventilator is open or closed, and which permits the port-hole to be fully screened.

What we claim is:

1. A device of the character described comprising, a port-hole, an annular frame fitting within the port-hole, a plurality of shutter blades pivoted in said frame and adapted when in their closed positions to seat on said frame, a housing extending transversely of the frame and secured thereto at diametrically opposite points, an actuating member in the form of a bar movable back and forth in said housing axially of the frame, screw-threaded means for moving said actuating member, and toggle connections between the blades and actuating member whereby said blades can be opened and closed by movements of the actuating member.

2. A device of the character described comprising, a port-hole, a ring fitting therein, a stepped seat on said ring", pivoted shutter blades mounted in the ring and adapted to rest against the stepped seat when in their closed position, a bar, toggles connecting said bar with the blades whereby said blades may be opened or closed by movements of the bar, and a manually-operated screw shaft for moving the bar.

3. A device of the character described comprising,'a port-hole, an annular frame fitting within the port-hole, a plurality of shutter blades pivoted at their ends in said frame, an actuating member and means for moving it back and forth transversely of and within the frame, toggle connections between the blades and said actuating member whereby said blades are swung on their pivots to an open position when the actuating member is moved in one direction and are swung to a closed and partly overlapped position when the actuating member is moved in an opposite direction and an annular stepped seat against which the blades abut when in their closed position.

4. A device of the character described comprising, a port-hole, a frame fitting within the port-hole, a plurality of shutter blades pivoted in said frame and adapted when in their closed positions to seat against a stepped edge of said frame, a channel-shaped housing extending transversely of the frame, an actuating member movable back and forth axially only of the frame in said housing, screw-threaded means for moving said actuating member, and toggle connections between the blades and actuating member whereby said blades can be opened and closed by the axial movements of the actuating member.

5. A device of the character described comprising, a port-hole, an annular frame fitting Within the port-hole, a plurality of shutter blades pivoted at their ends in said frame, a bar extending transversely of the frame and movable back and forth axially therein, a channelled guide extending across the frame in which said bar is movable axially only of the frame, a screw shaft engaging the bar and moving the same by its rotation, a crank for rotating said shaft, and toggle connections between the shutter blades and bar whereby movements of the bar will open or close the shutter blades, all of said blades being mounted to move toward the center of the frame upon their movement to open position.

5. A device of the character described comprising, a port-hole, a frame fitted within said port-hole, shutter blades pivoted on said frame, a housing extending across the frame and connecting diametrically opposite points thereon, actuating means movable back and forth in said housing, toggle connections between said actuating means and the blades to swing the blades on their pivots, screens within the frame in back of the blades, said screens being located on opposite sides of the housing, and means for detachably holding said screens in position.

KENNARD KORNBAU. VALENTINE KROMM. HARRY L. KOHL. 

